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Finding the Fourth Proportional to 625.38, 863.13 and 363.55

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Solution

The fourth proportional to 625.38, 863.13 and 363.55 is: 501.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.38 : 863.13 = 363.55 : x
  2. Step 2: Convert to fraction form
    625.38/863.13 = 363.55/x
  3. Step 3: Cross multiply
    625.38x = 863.13 × 363.55
  4. Step 4: Simplify right side
    625.38x = 313,784.78
  5. Step 5: Solve for x
    x = 313,784.78/625.38
  6. Step 6: Final answer
    x = 501.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.